Inventories (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Inventory Disclosure [Abstract]
Inventory Charges, net (E&O and APC)	$ 1,570	$ 806	$ 4,073	$ 1,078
Deferred Costs of Sales, Current	0		0		$ 14,100
Inventory, Net [Abstract]
Raw materials	20,171		20,171		14,546
Work-in-process	0		0		98
Finished goods	7,074		7,074		7,485
Inventory, Gross	27,245		27,245		22,129
Less: inventory valuation allowance	(8,165)		(8,165)		(5,317)
Inventories, net	19,080		19,080		16,812
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross	12,000		$ 12,000		11,500
Age of consignment inventory purchased by contract manufacturer			365 days
Age of consignment inventory purchased as a result of forecasted demand			180 days
Inventory Charges, Inventory Valuation, Deposit And Adverse Purchase Commitment Liability	1,281	1,333	$ 2,670	2,612
Adverse Purchase Commitments	(289)	$ 527	(1,403)	$ 1,534
Inventory for Long-term Contracts or Programs, Gross	$ 10,800		$ 10,800		$ 8,700